Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Heidi Anne Mackenzie, M.S.
Audiologist in Seattle, WA · enumerated 2010.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1972804722
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Registry record
Entity type Individual (Type 1)
Name Mrs. Heidi Anne Mackenzie
Credential M.S.
Sex Female
Practice address 1600 E Jefferson St Ste 202, Seattle, WA, 98122
Phone (206) 320-5687
Fax (206) 320-8145
Enumeration date Nov 10, 2010
Last updated in NPPES Nov 10, 2010
Taxonomy & licenses
231H00000X Audiologist Speech, Language and Hearing Service Providers · License LD 00002097 (WA) Primary
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What specialty is Heidi Mackenzie?
Heidi Mackenzie is registered in NPPES with the primary taxonomy of Audiologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-11-10.